Pressure bulkhead for an aerospace fuselage
View Patent ↗A pressure bulkhead for an aerospace fuselage includes a bulkhead main portion having an approximately flat shape in unloaded state; and a frame supporting and connecting said bulkhead main portion to the fuselage; wherein said bulkhead main portion includes an airtight structure having a reticular component.
1. A pressure bulkhead for an aerospace fuselage, comprising:
a bulkhead main portion having an approximately flat shape in an unloaded state; and
a frame supporting and connecting said bulkhead main portion to the fuselage;
wherein said bulkhead main portion comprises an airtight structure having a reticular component comprising ligament elements which are braided ligaments forming a cloth adapted to be airtight, wherein said cloth comprises one or more layers of standard fabrics stacked in a quasi orthotropic sequence, and
wherein said cloth comprises at least one portion of polar weaves forming an opening for an airtight passage of a conduit.
2. The pressure bulkhead according to claim 1 ,
wherein said frame is made of metallic and/or composite material.
3. The pressure bulkhead according to claim 2 ,
wherein said frame is made of aluminium 7150.
4. The pressure bulkhead according to claim 1 ,
wherein said ligament elements are made of aromatic polyamide fibres.
5. A pressure bulkhead for an aerospace fuselage, comprising:
a bulkhead main portion having an approximately flat shape in an unloaded state; and
a frame supporting and connecting said bulkhead main portion to the fuselage;
wherein said bulkhead main portion comprises an airtight structure having a reticular component comprising ligament elements, and
wherein said ligament elements are belt-shaped ligaments extending radially in at least one first layer and one second layer, respectively and form at least two retaining layers for a sealing element arranged between said retaining layers.
6. The pressure bulkhead according to claim 5 ,
wherein said sealing element is a thermoplastic membrane.
7. The pressure bulkhead according to claim 5 ,
wherein inner ends of said belt-shaped ligament elements are connected to at least one central belt and the other ends are connected to at least one peripheral belt.
8. The pressure bulkhead according to claim 7 ,
wherein said sealing element is connected to said at least one peripheral belt.
9. The pressure bulkhead according to claim 7 ,
wherein said at least one peripheral belt is attached to said frame fixing said sealing element and said airtight structure having a reticular component to said frame.
10. The pressure bulkhead according to claim 5 ,
wherein said frame is made of metallic and/or composite material.
11. The pressure bulkhead according to claim 10 ,
wherein said frame is made of aluminium 7150.
12. The pressure bulkhead according to claim 5 ,
wherein said ligament elements are made of aromatic polyamide fibres.